Sasuke would also be a great choice. His dark past and his search for power could parallel some of the characters in Kingdom Hearts: Birth by Sleep. He might have an interesting dynamic with characters like Terra. Sasuke could be both intrigued and challenged by the power of the Keyblades and the different magic systems in the Kingdom Hearts universe. His own Sharingan abilities could also create some really cool interactions when combined with the powers in the Kingdom Hearts world.
Definitely Kakashi. He has a laid - back yet highly skilled and intelligent personality. In a crossover with Kingdom Hearts: Birth by Sleep, he could use his Sharingan to analyze the Keyblade wielders' techniques. His experience as a ninja and his knowledge of different jutsus could be very useful in the Kingdom Hearts world. Also, his sense of humor and his mentoring role could have an impact on characters like Roxas, perhaps guiding him in a different way compared to his usual friends in the Kingdom Hearts universe.
Aqua is popular as well. Her loyalty and her own journey in 'Kingdom Hearts Birth by Sleep' make her an interesting character for crossovers. She could be paired with characters from different franchises in fanfiction. For example, if she were to cross over with a character from a magical girl anime, her strong will and magical abilities could lead to some really engaging storylines.
Well, how about a story where the Organization XIII members from Kingdom Hearts: Birth by Sleep infiltrate the Naruto world? They could try to manipulate the different ninja villages, causing chaos. Naruto and his friends would have to figure out their motives and stop them. Meanwhile, some of the Naruto characters might start to develop abilities similar to the Organization XIII members. For instance, Sakura could gain some sort of power related to Xion's ability to copy others' forms, but in a way that is unique to the Naruto universe's ninja skills.
Aqua is quite memorable. She is strong - willed and very protective of her friends. Her magical abilities and her role as a keyblade wielder make her stand out.
Naruto would be very interesting. His boisterous personality and his strong sense of justice would make for great interactions in the Kingdom Hearts universe. He could be constantly amazed by the different worlds and the magic in the Kingdom Hearts setting, and his growth as a character could be explored further as he faces new challenges outside of his own world.
Another interesting pairing could be Sakura and Kairi. Sakura is a strong - willed kunoichi who has grown from being a bit of a fangirl to a capable fighter. Kairi is also a strong - hearted girl. They could bond over their experiences of being in the background sometimes but still being important to their respective groups. They might even learn some new self - defense moves from each other.
Naruto himself would be very interesting. His never - give - up attitude and powerful jutsu would make him a great addition to the AOT world. He could inspire the people there to keep fighting against the Titans. His ability to make friends easily might also help in uniting different groups in the AOT world.
I think Naruto himself. His never - give - up attitude and his ability to make friends easily would make for great interactions in FF14. He could inspire the other players or characters in the game to be more brave and determined.
Goku from Dragon Ball (just kidding, not part of Naruto or Pokemon but for a fun comparison). Seriously, Kakashi would be great. His laid - back but highly skilled nature could make for some interesting interactions. He might have a team of unique and rare Pokemon that he's collected over the years. And his experience as a ninja teacher could also come in handy when training Pokemon. He could teach them ninja - like stealth and combat maneuvers.
I think Dom Santiago from Gears of War would be really interesting. He has that strong sense of loyalty and his combat skills are top - notch. In the Naruto universe, he could bond with characters like Shikamaru over their strategic thinking. He could also teach the Naruto characters some of the Gears of War combat tactics, and in return, learn about chakra and ninja techniques.
Twilight Sparkle from MLP would be an amazing crossover character into the Naruto world. She is intelligent and curious, just like many of the ninja in Naruto. She would be fascinated by the concept of chakra and would likely try to study it. Her magic skills could also be compared and contrasted with ninjutsu, making for some really cool interactions.